PN-G655RE (serv.man3). Complete - Sharp Monitor Service Manual (repair manual). Page 21

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PN-G655RE
CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTION
2 – 12
<Repeater control command>
Repeater control is achieved by setting the FOURTH CHARACTER of
the parameter to “
+
”.
Example:
In repeater control, responses are returned by all the connected monitors.
If you want to determine that a value has been returned by a specific
set, assign ID numbers to each monitor in advance.
When some monitors do not return their responses, the probable cause
is that the monitors could not receive the command or command pro-
cessing is not complete. Do not send a new command.
Example:
(When 4 monitors are connected, and assigned ID numbers: 1 through 4.)
Repeater control can also be used for reading settings.
Example:
Note:
•  If repeater control is used during ID designation (IDSL, IDLK),
the ID designation is canceled.
•  Commands that use parameters consisting of more than four char-
acters can not be controlled by repeater control.
<Communication interval>
•  After OK or ERR is returned, you must send the following commands.
To set a timeout for the command response, specify 10 seconds or
longer.
•  Provide an interval of 100 ms or more between the command 
response and the transmission of the next command.
(2) RS-232C command table
<How to read the command table>
■ Power control/Input mode selection
VOLM030 
+
1 Sets volume of all monitors to 30.
VOLM030 
+
WAIT
OK
001
OK
002
OK
003
OK
004
1 If 4 monitors are connected in a chain, reliable opera-
tion can be ensured by sending a new command only
after a reply has been returned by 4th (last) monitor.
VOLM??? 
+
WAIT
10
001
Volume settings for all monitors are returned.
20
002
30
003
30
004
VOLM0020
OK
INPS0001
WAIT
OK
Interval of 100 ms or more
Command
: Command field
Direction
: W: When the “Parameter” is set in the parameter field, the command functions as described under “Control/Response Contents”.
R : The returned value indicated under “Reply” can be obtained by setting “????”, “
?” or “???
+
” (repeater control) in the parameter
field.
Parameter
: Parameter field 
Reply
: Response (Returned value)
*
: “o ” indicates commands which can be used in power standby mode.
Function
Command
Direction
Parameter
Reply
Control/Response contents
*
POWER CONTROL
POWR
W
0
Switches to standby mode.
o
1
Returns from standby mode.
R
0
Standby mode
1
Normal mode
2
Input signal waiting mode
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